FRANCIS L MESSIER
Engineering in Worcester, MA
License number
Massachusetts 24253
Issued Date
Apr 23, 1971
Expiration Date
Jun 30, 2004
Type
Mechanical Engineer
Address
Address
Worcester, MA 01605
Personal information
See more information about FRANCIS L MESSIER at radaris.comName
Address
Phone
18 Barnard Rd, Worcester, MA 01605
902 Main St APT 46, Hanson, MA 02341
Rockland, MA
PO Box 11, Wheelwright, MA 01094
44 Ruggles Ln, Barre, MA 01005
Professional information
See more information about FRANCIS L MESSIER at trustoria.com
Apparatus For Grinding A Workpiece
Apparatus For Grinding A Workpiece
US Patent:
4201016, May 6, 1980
Filed:
Mar 16, 1978
Appl. No.:
5/886996
Inventors:
Calvin K. Kirk - Shrewsbury MA
Glover C. Joyce - Worcester MA
Francis L. Messier - Worcester MA
Glover C. Joyce - Worcester MA
Francis L. Messier - Worcester MA
Assignee:
The Warner & Swasey Company - Cleveland OH
International Classification:
B24B 504
US Classification:
51105SP
Abstract:
An improved grinding method and apparatus is advantageously used to sequentially grind the pins of a crankshaft. During the grinding of each crankpin, the pin is supported by a steadyrest. During an initial grinding operation, the crankpins are measured or gauged to determine if they are out-of-round by an amount which is greater than the tolerances for the finished crankshaft and less than a maximum amount. If a crankpin is out-of-round by an amount which is equal to or greater than a maximum amount, the crankshaft is rejected. However, if a crankpin is out-of-round by an amount which is less than the maximum amount and more than the tolerances for a finished pin, a second grinding operation is initiated after the initial grinding operation has been completed. During the initial and second grinding operations, a main drive motor is effective to press the steadyrest against the crankpins. A secondary drive motor is provided to adjust the position of the steadyrest to compensate for the smaller size to which the crankpins are ground during the second grinding operation.
Method And Apparatus For Grinding A Workpiece
Method And Apparatus For Grinding A Workpiece
US Patent:
4292766, Oct 6, 1981
Filed:
Dec 31, 1979
Appl. No.:
6/108364
Inventors:
Calvin K. Kirk - Shrewsbury MA
Glover C. Joyce - Worcester MA
Francis L. Messier - Worcester MA
Glover C. Joyce - Worcester MA
Francis L. Messier - Worcester MA
Assignee:
The Warner & Swasey Company - Cleveland OH
International Classification:
B24B 542
US Classification:
51105SP
Abstract:
An improved grinding method and apparatus is advantageously used to sequentially grind the pins of a crankshaft. During the grinding of each crankpin, the pin is supported by a steadyrest. During an initial grinding operation, the crankpins are measured or gauged to determine if they are out-of-round by an amount which is greater than the tolerances for the finished crankshaft and less than a maximum amount. If a crankpin is out-of-round by an amount which is equal to or greater than a maximum amount, the crankshaft is rejected. However, if a crankpin is out-of-round by an amount which is less than the maximum amount and more than the tolerance for a finished pin, a second grinding operation is initiated after the initial grinding operation has been completed. During the initial and second grinding operations, a main drive motor is effective to press the steadyrest against the crankpins. A secondary drive motor is provided to adjust the position of the steadyrest to compensate for the smaller size to which the crankpins are ground during the second grinding operation.